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Atkins and Jones - Chemical Principles 4/e (Homework)

Chris Read

W.H. Freeman, section 1, Fall 2010

Instructor: Mr. Freeman

Current Score : 0 / 16

Due : Sunday, August 15, 2010 07:00 PM EDT

About this Assignment

Question
Points
1 2 3 4 5 6
0/2 0/7 0/1 0/1 0/2 0/3
Total
0/16

Description

Here are some textbook questions from Chemical Principles: The Quest for Insight 4/e by Peter Atkins and Loretta Jones published by W. H. Freeman. Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. –/2 points Notes Question: AtJon4 1.E.028.
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The Humphreys series is set of spectral lines in the emission spectrum of atomic hydrogen that ends in the fifth excited state. If an atom emits a photon of radiation of wavelength 5907 nm, to which spectral line in the Humphreys series does that photon correspond (i.e., the lowest-energy spectral line, the second-lowest-energy spectral line, the third-lowest-energy spectral line, etc.)?
    


Justify your answer with a calculation.
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.
 s-1

2. –/7 points Notes Question: AtJon4 10.E.053.
Question part
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0/1 0/1 0/1 0/1 0/1 0/1 0/1
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0/7
 
Calculate the pH and pOH of each of the following aqueous solutions. Refer to table 1 and table 2.
(a) 0.88 M CH3COOH(aq)
pH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.

pOH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.


(b) 0.88 M CCl3COOH(aq)
pH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.

pOH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.


(c) 0.88 M HCOOH(aq)
pH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.

pOH
WebAssign will check your answer for the correct number of significant figures.
Enter a number with the correct number of significant figures.


(d) Explain any differences in pH on the basis of molecular structure.


3. –/1 points Notes Question: AtJon4 18.E.056.
Question part
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What reasons are there for using ethanol as a part of gasoline mixtures? (Select all that apply.)




4. –/1 points Notes Question: AtJon4 2.E.058.
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Which of the following species are radicals? (Select all that apply.)




5. –/2 points Notes Question: AtJon4 3.E.024.
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There are three different difluoroethenes, C2H2F2, which differ in the locations of the fluorine atoms.
(a) Which of the forms are polar? (Select all that apply.)




(b) Which has the largest dipole moment?
    



6. –/3 points Notes Question: AtJon4 3.E.062.
Question part
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Determine the bond orders of the following pair.
O2+
Enter an exact number.

O2
Enter an exact number.
Use the bond orders to predict which species has the stronger bond.
    


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